CN202888530U - Protection plug of electric water heater - Google Patents
Protection plug of electric water heater Download PDFInfo
- Publication number
- CN202888530U CN202888530U CN 201220468789 CN201220468789U CN202888530U CN 202888530 U CN202888530 U CN 202888530U CN 201220468789 CN201220468789 CN 201220468789 CN 201220468789 U CN201220468789 U CN 201220468789U CN 202888530 U CN202888530 U CN 202888530U
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- China
- Prior art keywords
- electric water
- leakage
- plug
- leakage protection
- water heater
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a protection plug of an electric water heater. The protection plug comprises a leakage protection module, an electronic control CPU and a relay, wherein the leakage protection module is connected with the relay through a high-voltage output end, the electronic control CPU is connected with a leakage key, the other end of the relay is connected with a power plug, and the other end of the leakage protection module is connected with a power output terminal. Through integrated design of the plug and leakage protection, the electric water heater uses the plug to separate a leakage protection device and the electric water heater, preventing moisture, etc. in the electric water heater from influencing operation of the leakage protection device. When leakage occurs in the electric water heater, the electronic control CPU and the leakage protection module perform interruption operation of power supply, so the protection plug is more safe to use and more convenient for users to use, without installing the leakage protection device additionally.
Description
Technical field
The utility model relates to a kind of plug, particularly a kind ofly is applied to electric water-heating apparatus, with the plug of power-off protection function.
Background technology
Present raising along with technology, various electric heating products are widely used such as water heater, hot water tap etc., and the energized conductor of electric loop in this type of electric heating products, comprise the short circuit between live wire, zero line, electric component and the various metallic conduit, perhaps conductor ground insulation performance deficiency all can produce earthing failure and cause overcurrent, gently then damages electric component.Heavy then cause electric shock, fire incident; therefore; earth leakage protective becomes an important ring of this class electric heating products; in electric heater; usually leakage protection module is mounted in the cabinet of electric heater; judge whether electric leakage by the potential difference that detects between live wire and the zero line; but owing to the situation that steam disturbs occurs because of a variety of causes easily in the cabinet of electric heater; affect leakage protection module work; although still there are various limitations in the A designer by in measures such as leakage protection module peripheral hardware water proof boxes.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of electric water-heating apparatus protection plug.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of electric water-heating apparatus protection plug; comprise successively leakage protection module, automatically controlled CPU and relay; wherein said leakage protection module also is connected with relay by high-voltage output end; described automatically controlled CPU also is connected with the electric leakage button; the other end of described relay is connected with attaching plug, and the other end of described leakage protection module then is connected with power output end.
For the ease of detecting the electric water-heating apparatus internal temperature, described automatically controlled CPU is connected with temperature sensor.
For the ease of detecting electric water-heating apparatus internal water flow, described automatically controlled CPU is connected with the current control module.
In order to guarantee automatically controlled CPU2 normal operation, described automatically controlled CPU is connected with the low-tension supply output module.
The beneficial effects of the utility model are: this electric water-heating apparatus with plug by plug and the integrated design of earth leakage protective; earth leakage protective device is separated with electric water-heating apparatus; avoid the steam etc. in the electric water-heating apparatus to affect earth leakage protective device work; when the electric leakage situation appears in electric water-heating apparatus; automatically controlled CPU and leakage protection module can be carried out power operation; safer during use, it is more convenient simultaneously the user to be used, and need not to install in addition earth leakage protective device again.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is circuit connection diagram of the present utility model;
Fig. 2 is structure chart of the present utility model.
Embodiment
With reference to Fig. 1, Fig. 2.A kind of electric water-heating apparatus protection plug; comprise successively leakage protection module 1; automatically controlled CPU2 and relay 3; wherein said automatically controlled CPU2 is connected with low-tension supply output module 7 to guarantee automatically controlled CPU2 normal operation; wherein low-tension supply output module 7 out-put supplies are in human safety voltage's current range; and as the low-pressure section of insulating power supply; be used for controlling automatically controlled CPU2; described leakage protection module 1 also is connected with relay 3 by high-voltage output end; described automatically controlled CPU2 also is connected with electric leakage button 21; the other end of described relay 3 is connected with attaching plug 4; the other end of described leakage protection module 1 then is connected with power output end; when the electric leakage situation appears in electric water-heating apparatus; automatically controlled CPU2 can judge the potential difference of live wire and zero line; and trip by leakage protection module 1, until getting rid of again, fault again switches on by electric leakage button 21.The integrated design of above-mentioned plug and earth leakage protective, it is more convenient to avoid leakage protection module 1 to be subjected to cabinet steam to disturb the while that the user is used, and does not need to install in addition earth leakage protective device.
Described automatically controlled CPU2 is connected with temperature sensor 5 and current control module 6, wherein the other end of temperature sensor 5 and current control module 6 accesses the cabinet inside of electric water-heating apparatus, be convenient to detect electric water-heating apparatus internal temperature and discharge, can inform unusually that when having detected temperature and discharge automatically controlled CPU2 makes the outage action.
Claims (4)
1. an electric water-heating apparatus is protected plug; it is characterized in that: comprise successively leakage protection module (1), automatically controlled CPU(2) and relay (3); wherein said leakage protection module (1) also is connected with relay (3) by high-voltage output end; described automatically controlled CPU(2) also is connected with electric leakage button (21); the other end of described relay (3) is connected with attaching plug (4), and the other end of described leakage protection module (1) then is connected with power output end.
2. a kind of electric water-heating apparatus protection plug according to claim 1 is characterized in that: described automatically controlled CPU(2) be connected with temperature sensor (5).
3. a kind of electric water-heating apparatus protection plug according to claim 1 is characterized in that: described automatically controlled CPU(2) be connected with current control module (6).
4. a kind of electric water-heating apparatus protection plug according to claim 1 is characterized in that: described automatically controlled CPU(2) be connected with low-tension supply output module (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468789 CN202888530U (en) | 2012-09-14 | 2012-09-14 | Protection plug of electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468789 CN202888530U (en) | 2012-09-14 | 2012-09-14 | Protection plug of electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888530U true CN202888530U (en) | 2013-04-17 |
Family
ID=48079921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220468789 Expired - Fee Related CN202888530U (en) | 2012-09-14 | 2012-09-14 | Protection plug of electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202888530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945506A (en) * | 2019-03-29 | 2019-06-28 | 广东万博电气有限公司 | A kind of electric heater with water outlet power down function |
-
2012
- 2012-09-14 CN CN 201220468789 patent/CN202888530U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945506A (en) * | 2019-03-29 | 2019-06-28 | 广东万博电气有限公司 | A kind of electric heater with water outlet power down function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20130914 |